I took chlorella just once. I drank down a huge green glass of water + chlorella thinking it would do me the world of good and went out that night with some friends. I absolutely stank. I don't think I have stunk that bad since. chlorella comes from seaweed and could smell fishy. Maybe your body just gives off whatever the smell is in you intestines. Maybe it's just leaky gut. I want to start taking chlorella again but only if I can find one that doesn't smell of the sea. That could be the reason for the fishy comments.